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PeerBasis
Compensation Comparability Determination

Ebenezer Maxwell Mansion Inc

Executive Director / CEO

EIN 231971984
PA · NTEE A82Z
FY ending 2023-12-31
June 9, 2026

This analysis benchmarks the total compensation of Diane Richardson, Executive Director / CEO ($45,311) against every comparable organization that fit the selection criteria — 38 in total — drawn systematically from IRS Form 990 filings, not a hand-picked subset.

Compensation sits at approximately the 66th percentile of comparable organizationswithin the typical range

Benchmarked executive: Diane Richardson — reported title “EXEC DIR -1/1/23 TO 9/12/23”, a direct title match to the Executive Director / CEO role.

How comparable organizations were selected

38 organizations qualified on sector, size, and geography 38 within the band form the benchmarked peer set.

Distribution of comparable compensation

$7,037 total compensation of comparable organizations → $141,839 $45,311
$20,17910th
$28,31025th
$38,401Median
$53,03675th
$65,02190th
$45,311This org · 66th
p10$20,179
p25$28,310
p50$38,401
p75$53,036
p90$65,021
$45,311

Comparable organizations

Each figure is Form 990 Part VII columns D + F (reportable pay plus other compensation and benefits; column F may include amounts from related organizations), normalized to PA cost of living (BEA RPP, 2023) and to its filing year (CPI-U); the reported amount is on each linked 990.

OrganizationStateRevenueMatched titleComp
(reported)
Comp
(adjusted)
FY
Historic Lexington Foundation VA$119,424 Executive Director $22,238 $20,914 2024
Codington County Historical Society SD$123,793 Museum Director $49,778 $55,089 2023
Captain Avery Museum Inc MD$124,562 Executive Director $46,688 $43,770 2023
Burnett County Historical Society Inc WI$116,296 Executive Director $6,719 $7,037 2023
Southwest Seattle Historical Society WA$128,815 Executive Dir. $60,138 $52,443 2024
Dwight D Eisenhower Society PA$132,722 Executive Dir. $41,074 $39,896 2024
Abraham Lincoln Association IL$133,129 Executive Manager $29,125 $28,713 2023
Swiss Heritage Society Inc IN$105,467 President $18,692 $19,200 2024
Peterborough Historical Society NH$136,828 Executive Direc $68,827 $61,900 2024
Hillforest Historical Foundation Inc IN$137,979 Executive Director - Left Mid-year $28,697 $29,476 2024
Montgomery Co Historical Society IN$103,557 Exec Directo $24,621 $25,290 2024
Lewis & Clark National Park Association OR$101,962 Executive Director $56,787 $51,365 2024
Brown County Historical Society WI$143,537 Executive Director $61,500 $62,559 2024
Hunterdon County Historical Society NJ$150,272 Executive Adminstrator $60,000 $52,178 2024
Colonial Theater Inc ME$90,527 Executive Director $30,000 $30,124 2023
Westport Historical Society Inc CT$153,112 Executive Di $155,315 $141,839 2024
Berkeley Architectural Heritage Association CA$88,893 Executive Director $33,500 $28,175 2024
Tioga County Historical Society PA$86,949 Managing Director $28,891 $28,891 2023
Warren County Historical Society PA$155,664 Executive Director $39,287 $39,287 2023
Kenilworth Historical Society IL$157,577 Director $53,998 $53,234 2023
Ohio To Erie Trail Fund OH$83,119 Exec Director-non Voting $36,000 $37,138 2024
Delaware County Historical Society PA$159,182 Acting Executive Director $56,000 $54,393 2024
Sewickley Valley Historical Society PA$81,939 Executive Director $41,167 $41,167 2023
The Clifton Forge Company VA$161,429 Executive Director $26,570 $25,726 2023
Stevens County Historical Society MN$162,560 Executive Dir. $34,226 $33,913 2023

Comp (reported) is the figure on each organization's Form 990 (columns D + F); Comp (adjusted) normalizes it to PA cost of living and 2023 dollars. Click any organization to verify the figure on ProPublica.

Methodology

Comparable organizations were drawn from electronically filed IRS Form 990 returns and matched on sector (NTEE code), budget (a size-adaptive revenue band that tightens as the organization grows), and geography (same-state first, broadening only when too few peers qualify); every organization within the band forms the peer set. To compare fairly across regions and years, peer compensation is normalized to PA cost of living (BEA Regional Price Parities, 2023) and to the subject's filing year (CPI-U). The figure benchmarked is Form 990 Part VII, Section A, columns D + F — reportable pay plus other compensation, benefits, and deferred amounts (column F may include amounts from related organizations) — with the chief executive matched by role. Related-organization amounts (column E) and institutional trustees are excluded. Full methodology: peerbasis.org/methodology.

Sample, role match & sensitivity

Sensitivity — the subject's percentile under alternative compensation definitions:

BasisSubject percentile
Total compensation (D + F), cost-of-living + inflation adjusted — the PeerBasis default66th
Total compensation (D + F), as reported (no adjustments)63rd
Reportable pay only (column D), adjusted66th
All sources (D + E + F), adjusted66th

If the percentile moves materially across these definitions, the result is sensitive to methodology choices, and the board should weigh which basis best fits its facts.

Rebuttable presumption of reasonableness · 26 CFR 53.4958-6

Compensation paid by a tax-exempt organization is presumed reasonable — shifting the burden to the IRS — when three requirements are met. This report supplies the comparability data for the second. The board should record the following in its minutes concurrently with its decision:

Draft board minutes — executive compensation

  1. The compensation of the Executive Director / CEO (Diane Richardson) was approved in advance by [the Board / Compensation Committee], composed of members with no conflict of interest with respect to the arrangement.
  2. Prior to its determination, the authorized body obtained and relied upon appropriate comparability data, namely the PeerBasis Compensation Comparability Determination dated June 9, 2026, comparing compensation against 38 similarly situated organizations (Same NTEE sector (A82), nationwide + budget 0.67–1.5× revenue).
  3. The authorized body determined that total compensation of $45,311 is reasonable (approximately the 66th percentile of comparable organizations) and documented the basis for this determination concurrently, on [date], by a vote of [__ for / __ against].

Sources: IRS Form 990 e-file data (apps.irs.gov); IRS Business Master File (NTEE classification). Every figure traces to an original public filing — click any organization above to verify it on ProPublica. PeerBasis is a service of Prismind Analytics; its methodology is published, was commissioned for independent adversarial review, and discloses its own limitations. This report is comparability data to support a board's good-faith determination under IRC 4958; it is not legal or tax advice. Generated by PeerBasis on June 9, 2026.